When the game starts, press up on the dpad to activate most of the mods (some will already work). After that, pressing up on the dpad will toggle between the primary and secondary controls. The secondary (posted below) are for toggling certain settings (I will add more as they are requested).

Dpad left switches between pairs of weapons. Each time you press it, you get a different pair of weapons. I suggest you press it and drop all the guns you have until you get the one you want, then drop that somewhere you’ll find it, get your other gun, and then go pick up your first again. You’ll get the hang of it.

reminders it wont work if you go on multi player ( it deletes hacks i did that and deleted) i dont have patched black ops make your not on xbl have a nice day with the EXTREME HACKS (i died at 1000 lvl from dog :()